puzzler10/README.md

## README.md

      
    Raw
  

              README.md
            
          
    This graph exploits the unstable nature of forceCollide strength values outside of [0,1].
Click here for similar examples and here for an explanation of this effect.

  
## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

.links line {
  stroke: #999;
  stroke-opacity: 0.6;
}

.nodes circle {
  stroke: black	;
  stroke-width: 0px;
}
</style>
<svg width="800" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
//create somewhere to put the force directed graph
var svg = d3.select("svg"),
    width = +svg.attr("width"),
    height = +svg.attr("height");

var radius = 10;

var nodes_data =  [
    {"name": "Lillian", "sex": "F"},
    {"name": "Gordon", "sex": "M"},
    {"name": "Sylvester", "sex": "M"},
    {"name": "Mary", "sex": "F"},
    {"name": "Helen", "sex": "F"},
    {"name": "Jamie", "sex": "M"},
    {"name": "Jessie", "sex": "F"},
    {"name": "Ashton", "sex": "M"},
    {"name": "Duncan", "sex": "M"},
    {"name": "Evette", "sex": "F"},
    {"name": "Mauer", "sex": "M"},
    {"name": "Fray", "sex": "F"},
    {"name": "Duke", "sex": "M"},
    {"name": "Baron", "sex": "M"},
    {"name": "Infante", "sex": "M"},
    {"name": "Percy", "sex": "M"},
    {"name": "Cynthia", "sex": "F"},
    {"name": "Feyton", "sex": "M"},
    {"name": "Lesley", "sex": "F"},
    {"name": "Yvette", "sex": "F"},
    {"name": "Maria", "sex": "F"},
    {"name": "Lexy", "sex": "F"},
    {"name": "Peter", "sex": "M"},
    {"name": "Ashley", "sex": "F"},
    {"name": "Finkler", "sex": "M"},
    {"name": "Damo", "sex": "M"},
    {"name": "Imogen", "sex": "F"}
    ]

//Sample links data
//type: A for Ally, E for Enemy
var links_data = [
	{"source": "Sylvester", "target": "Gordon", "type":"A" },
    {"source": "Sylvester", "target": "Lillian", "type":"A" },
    {"source": "Sylvester", "target": "Mary", "type":"A"},
    {"source": "Sylvester", "target": "Jamie", "type":"A"},
    {"source": "Sylvester", "target": "Jessie", "type":"A"},
    {"source": "Sylvester", "target": "Helen", "type":"A"},
    {"source": "Helen", "target": "Gordon", "type":"A"},
    {"source": "Mary", "target": "Lillian", "type":"A"},
    {"source": "Ashton", "target": "Mary", "type":"A"},
    {"source": "Duncan", "target": "Jamie", "type":"A"},
    {"source": "Gordon", "target": "Jessie", "type":"A"},
    {"source": "Sylvester", "target": "Fray", "type":"E"},
    {"source": "Fray", "target": "Mauer", "type":"A"},
    {"source": "Fray", "target": "Cynthia", "type":"A"},
    {"source": "Fray", "target": "Percy", "type":"A"},
    {"source": "Percy", "target": "Cynthia", "type":"A"},
    {"source": "Infante", "target": "Duke", "type":"A"},
    {"source": "Duke", "target": "Gordon", "type":"A"},
    {"source": "Duke", "target": "Sylvester", "type":"A"},
    {"source": "Baron", "target": "Duke", "type":"A"},
    {"source": "Baron", "target": "Sylvester", "type":"E"},
    {"source": "Evette", "target": "Sylvester", "type":"E"},
    {"source": "Cynthia", "target": "Sylvester", "type":"E"},
    {"source": "Cynthia", "target": "Jamie", "type":"E"},
    {"source": "Mauer", "target": "Jessie", "type":"E"},
    {"source": "Duke", "target": "Lexy", "type":"A"},
    {"source": "Feyton", "target": "Lexy", "type":"A"},
    {"source": "Maria", "target": "Feyton", "type":"A"},
    {"source": "Baron", "target": "Yvette", "type":"E"},
    {"source": "Evette", "target": "Maria", "type":"E"},
    {"source": "Cynthia", "target": "Yvette", "type":"E"},
    {"source": "Maria", "target": "Jamie", "type":"E"},
    {"source": "Maria", "target": "Lesley", "type":"E"},
    {"source": "Ashley", "target": "Damo", "type":"A"},
    {"source": "Damo", "target": "Lexy", "type":"A"},
    {"source": "Maria", "target": "Feyton", "type":"A"},
    {"source": "Finkler", "target": "Ashley", "type":"E"},
    {"source": "Sylvester", "target": "Maria", "type":"E"},
    {"source": "Peter", "target": "Finkler", "type":"E"},
    {"source": "Ashley", "target": "Gordon", "type":"E"},
    {"source": "Maria", "target": "Imogen", "type":"E"}

]

//set up the simulation
var simulation = d3.forceSimulation()
					//add nodes
					.nodes(nodes_data);

var link_force =  d3.forceLink(links_data)
                        .id(function(d) { return d.name; });

var charge_force = d3.forceManyBody()
    .strength(-40);

var center_force = d3.forceCenter(width / 2, height / 2);

//High strength value causes unstable effects
var collide_force = d3.forceCollide(radius)
    .strength(10);

simulation
    .force("charge_force", charge_force)
    .force("center_force", center_force)
    .force("links",link_force)
    .force("collide", collide_force)
 ;

//add tick instructions:
simulation.on("tick", tickActions );

//draw lines for the links
var link = svg.append("g")
      .attr("class", "links")
    .selectAll("line")
    .data(links_data)
    .enter().append("line")
      .attr("stroke-width", 2)
      .style("stroke", linkColour);

//draw circles for the nodes
var node = svg.append("g")
        .attr("class", "nodes")
        .selectAll("circle")
        .data(nodes_data)
        .enter()
        .append("circle")
        .attr("r", radius)
        .attr("fill", circleColour);


var drag_handler = d3.drag()
	.on("start", drag_start)
	.on("drag", drag_drag)
	.on("end", drag_end);

drag_handler(node);

/** Functions **/

//Function to choose what color circle we have
//Let's return blue for males and red for females
function circleColour(d){
	if(d.sex =="M"){
		return "blue";
	} else {
		return "pink";
	}
}

//Function to choose the line colour and thickness
//If the link type is "A" return green
//If the link type is "E" return red
function linkColour(d){
	if(d.type == "A"){
		return "green";
	} else {
		return "red";
	}
}

//drag handler
//d is the node
function drag_start(d) {
 if (!d3.event.active) simulation.alphaTarget(0.3).restart();
    d.fx = d.x;
    d.fy = d.y;
}

function drag_drag(d) {
  d.fx = d3.event.x;
  d.fy = d3.event.y;
}


function drag_end(d) {
  if (!d3.event.active) simulation.alphaTarget(0);
  d.fx = null;
  d.fy = null;
}

function tickActions() {
    //update circle positions each tick of the simulation
       node
        .attr("cx", function(d) { return d.x; })
        .attr("cy", function(d) { return d.y; });

    //update link positions
    link
        .attr("x1", function(d) { return d.source.x; })
        .attr("y1", function(d) { return d.source.y; })
        .attr("x2", function(d) { return d.target.x; })
        .attr("y2", function(d) { return d.target.y; });
	  }

</script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	.links line {
	stroke: #999;
	stroke-opacity: 0.6;
	}

	.nodes circle {
	stroke: black ;
	stroke-width: 0px;
	}
	</style>
	<svg width="800" height="600"></svg>
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script>
	//create somewhere to put the force directed graph
	var svg = d3.select("svg"),
	width = +svg.attr("width"),
	height = +svg.attr("height");

	var radius = 10;

	var nodes_data = [
	{"name": "Lillian", "sex": "F"},
	{"name": "Gordon", "sex": "M"},
	{"name": "Sylvester", "sex": "M"},
	{"name": "Mary", "sex": "F"},
	{"name": "Helen", "sex": "F"},
	{"name": "Jamie", "sex": "M"},
	{"name": "Jessie", "sex": "F"},
	{"name": "Ashton", "sex": "M"},
	{"name": "Duncan", "sex": "M"},
	{"name": "Evette", "sex": "F"},
	{"name": "Mauer", "sex": "M"},
	{"name": "Fray", "sex": "F"},
	{"name": "Duke", "sex": "M"},
	{"name": "Baron", "sex": "M"},
	{"name": "Infante", "sex": "M"},
	{"name": "Percy", "sex": "M"},
	{"name": "Cynthia", "sex": "F"},
	{"name": "Feyton", "sex": "M"},
	{"name": "Lesley", "sex": "F"},
	{"name": "Yvette", "sex": "F"},
	{"name": "Maria", "sex": "F"},
	{"name": "Lexy", "sex": "F"},
	{"name": "Peter", "sex": "M"},
	{"name": "Ashley", "sex": "F"},
	{"name": "Finkler", "sex": "M"},
	{"name": "Damo", "sex": "M"},
	{"name": "Imogen", "sex": "F"}
	]

	//Sample links data
	//type: A for Ally, E for Enemy
	var links_data = [
	{"source": "Sylvester", "target": "Gordon", "type":"A" },
	{"source": "Sylvester", "target": "Lillian", "type":"A" },
	{"source": "Sylvester", "target": "Mary", "type":"A"},
	{"source": "Sylvester", "target": "Jamie", "type":"A"},
	{"source": "Sylvester", "target": "Jessie", "type":"A"},
	{"source": "Sylvester", "target": "Helen", "type":"A"},
	{"source": "Helen", "target": "Gordon", "type":"A"},
	{"source": "Mary", "target": "Lillian", "type":"A"},
	{"source": "Ashton", "target": "Mary", "type":"A"},
	{"source": "Duncan", "target": "Jamie", "type":"A"},
	{"source": "Gordon", "target": "Jessie", "type":"A"},
	{"source": "Sylvester", "target": "Fray", "type":"E"},
	{"source": "Fray", "target": "Mauer", "type":"A"},
	{"source": "Fray", "target": "Cynthia", "type":"A"},
	{"source": "Fray", "target": "Percy", "type":"A"},
	{"source": "Percy", "target": "Cynthia", "type":"A"},
	{"source": "Infante", "target": "Duke", "type":"A"},
	{"source": "Duke", "target": "Gordon", "type":"A"},
	{"source": "Duke", "target": "Sylvester", "type":"A"},
	{"source": "Baron", "target": "Duke", "type":"A"},
	{"source": "Baron", "target": "Sylvester", "type":"E"},
	{"source": "Evette", "target": "Sylvester", "type":"E"},
	{"source": "Cynthia", "target": "Sylvester", "type":"E"},
	{"source": "Cynthia", "target": "Jamie", "type":"E"},
	{"source": "Mauer", "target": "Jessie", "type":"E"},
	{"source": "Duke", "target": "Lexy", "type":"A"},
	{"source": "Feyton", "target": "Lexy", "type":"A"},
	{"source": "Maria", "target": "Feyton", "type":"A"},
	{"source": "Baron", "target": "Yvette", "type":"E"},
	{"source": "Evette", "target": "Maria", "type":"E"},
	{"source": "Cynthia", "target": "Yvette", "type":"E"},
	{"source": "Maria", "target": "Jamie", "type":"E"},
	{"source": "Maria", "target": "Lesley", "type":"E"},
	{"source": "Ashley", "target": "Damo", "type":"A"},
	{"source": "Damo", "target": "Lexy", "type":"A"},
	{"source": "Maria", "target": "Feyton", "type":"A"},
	{"source": "Finkler", "target": "Ashley", "type":"E"},
	{"source": "Sylvester", "target": "Maria", "type":"E"},
	{"source": "Peter", "target": "Finkler", "type":"E"},
	{"source": "Ashley", "target": "Gordon", "type":"E"},
	{"source": "Maria", "target": "Imogen", "type":"E"}

	]

	//set up the simulation
	var simulation = d3.forceSimulation()
	//add nodes
	.nodes(nodes_data);

	var link_force = d3.forceLink(links_data)
	.id(function(d) { return d.name; });

	var charge_force = d3.forceManyBody()
	.strength(-40);

	var center_force = d3.forceCenter(width / 2, height / 2);

	//High strength value causes unstable effects
	var collide_force = d3.forceCollide(radius)
	.strength(10);

	simulation
	.force("charge_force", charge_force)
	.force("center_force", center_force)
	.force("links",link_force)
	.force("collide", collide_force)
	;

	//add tick instructions:
	simulation.on("tick", tickActions );

	//draw lines for the links
	var link = svg.append("g")
	.attr("class", "links")
	.selectAll("line")
	.data(links_data)
	.enter().append("line")
	.attr("stroke-width", 2)
	.style("stroke", linkColour);

	//draw circles for the nodes
	var node = svg.append("g")
	.attr("class", "nodes")
	.selectAll("circle")
	.data(nodes_data)
	.enter()
	.append("circle")
	.attr("r", radius)
	.attr("fill", circleColour);


	var drag_handler = d3.drag()
	.on("start", drag_start)
	.on("drag", drag_drag)
	.on("end", drag_end);

	drag_handler(node);

	/ Functions /

	//Function to choose what color circle we have
	//Let's return blue for males and red for females
	function circleColour(d){
	if(d.sex =="M"){
	return "blue";
	} else {
	return "pink";
	}
	}

	//Function to choose the line colour and thickness
	//If the link type is "A" return green
	//If the link type is "E" return red
	function linkColour(d){
	if(d.type == "A"){
	return "green";
	} else {
	return "red";
	}
	}

	//drag handler
	//d is the node
	function drag_start(d) {
	if (!d3.event.active) simulation.alphaTarget(0.3).restart();
	d.fx = d.x;
	d.fy = d.y;
	}

	function drag_drag(d) {
	d.fx = d3.event.x;
	d.fy = d3.event.y;
	}


	function drag_end(d) {
	if (!d3.event.active) simulation.alphaTarget(0);
	d.fx = null;
	d.fy = null;
	}

	function tickActions() {
	//update circle positions each tick of the simulation
	node
	.attr("cx", function(d) { return d.x; })
	.attr("cy", function(d) { return d.y; });

	//update link positions
	link
	.attr("x1", function(d) { return d.source.x; })
	.attr("y1", function(d) { return d.source.y; })
	.attr("x2", function(d) { return d.target.x; })
	.attr("y2", function(d) { return d.target.y; });
	}

	</script>